Subsurface scattering always gives red glow
You need to tweak the Subsurface Radius values. They will determine the RGB coloration.
As the manual says, this value corresponds to the average length the light travels between each bounce. The longer the path length is, the further the light is allowed to scatter. This is the main source of a material’s perceived « scatter color. » A material like skin will have a higher red radius than green and blue. Subsurface scattering is the diffusion of light beneath the surface.